Achievements
Complete each achievement to receive the allotted gamerscore:

A Shocking Development (10) - Use the Harvest Chief, Diggi-dodo's power on a Booli.
Abracadabra, Alakazam! (20) - Transform a Booli using the Animal Chief, Ali-mali.
And Stay Out! (10) - Kick the Boolis out of Ooga.
Join the Revolt (5) - Complete a split screen cooperative level.
Long Live Chief Berni-ni (5) - Revive the Fire Chief, Berni-ni.
Sober the Stinkers (15) - Get the stinkers off slugs.
Bone Collection (35) - Collect all of the bones of the Ancient One.
Death Defier (5) - Complete 22 levels without dying.
Dibs on the Drumstick (35) - Make a feast for the flappers.
Flotsam and Jetsam (25) - Completely flood a level using the Swimmer Chief, Fini-ni.
Taste Tester (5) - Swallow 15 unique items.
The Way the Booli Crumbles (30) - Shatter a Booli into pieces using the Stone Chief, Te-tera.

Unlock Healer's Mask
Complete the Trial Realm. There are 4 levels in the trial and at the end of the 4th one, you will unlock this award.